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CYPRUS YAMPA~LLEY COAL CORPORATION: MINE NO. 1, 2, AND ECKMAN PARK • • <br />1999 ANNUAL HYDROLOGIC REPORT <br />SUMMARY OF WATER QUALITY DATA <br />summery of water quality data-1l.brw <br /> Arerege Std. Maximum Minimum Dnlls Count Begin End <br />1 PHYSICAL PROPERTIES TEMPERATURE FlELD 9.732 3.9 24.000 2.000 DEGREES C 220 09/80 09/99 <br />2 CONDUCTIVITY FIELD 1373.341 336.6 2130.000 560.000 UMHOS/CM 220 09/80 09/99 <br />3 LAB 1599.538 216.5 2420.000 1180.000 UMHOS/CM 52 01/87 08/99 <br />4 PH FIELD 7.338 0.4 6.300 6.100 PH 219 09/80 09/99 <br />5 LAB 7.500 0.3 8.000 7.100 PH II 01/87 08/99 <br />6 LAB 7.500 0.0 7.500 7.500 UMHOS/CM I 03/98 03/98 <br />7 ALKALINITY TOTAL 317.434 25.0 386.000 254.000 MG/L 53 10/86 08/99 <br />B ACIDITY AS CAC03 21.667 12.1 31.000 8.000 MG/L 3 I I/BO 05/81 <br />9 HARDNESS AS CAC03 769.507 116.4 1180.000 516.000 MG/L 73 09/80 08/99 <br />10 SOLIDS SUSPENDED 38.000 0.0 38.W0 38.000 MG/L I 06/91 06/91 <br />11 TOTAL-DISS 1188.684 178.7 1970.000 808.000 MG/L 76 09/80 08/99 <br />12 CATIONS CALCIUM DISSOLVED 184.733 29.9 277.000 113.000 MG/L 75 09/80 08/99 <br />13 MAGNESIUM DISSOLVED 75.577 11.5 118.000 44.000 MG/L 75 09/80 08/99 <br />14 SODIUM DISSOLVED 82.139 14.3 142.000 52.000 MG/L 75 09/80 08/99 <br />15 POTASSIUM DISSOLVED 1.930 0.6 3.000 1.300 MG/L IO 09/80 04/83 <br />16 SAR NOT APPLICABLE 1.281 0.2 2.146 0.930 UNDEFINED 74 09/80 08/99 <br />17 ANIONS BICARBONATE AS HC03 375323 60.6 483.120 153.000 MG/L 75 10/BO 08/99 <br />IS CARBONATE AS C03 -0.103 4.4 16.800 -2.000 MG/L 31 10/82 08/99 <br />19 HYDROXIDE AS OH -2.000 0.0 -2.000 -2.000 MG/L 20 12/94 08/99 <br />20 CHLORIDE NOT APPLICABLE 10.391 2.0 14.000 6.000 MG/L 23 09/80 04/86 <br />21 SULFATE NOT APPLICABLE 607.868 117.6 1070.000 380.000 MG/L 76 09/80 08/99 <br />22 PRIMARY ARSENIC DISSOLVED -1.625 2.2 4.000 -5.000 UG/L 16 II/80 04/89 <br />23 BARIUM DISSOLVED -66.667 321.5 300.000 -300.000 UG/L 3 II/80 OS/81 <br />24 CADMIUM DISSOLVED -?.640 6.0 4.000 =!0.000 UG/L 65 II/80 08/99 <br />25 TOTAL RECOV UG/L 0 06/91 06/91 <br />26 LEAD DISSOLVED -20.175 72.7 300.000 -200.000 UG/L 57 II/80 08/99 <br />27 A1ERCURY DISSOLVED -0.171 0.7 5.000 -1.000 UG/L 65 II/80 08/99 <br />28 TOTAL RECOV UG/L 0 06/91 06/91 <br />29 SELENIUM DISSOLVED -0.538 3.0 16.000 -5.000 UG/L 65 II/80 08/99 <br />JO TOTAL RECOV UG/L 0 06/91 06/91 <br />31 SILVER DISSOLVED -33333 5.8 -30.000 -40.000 UG/L 3 II/80 05/81 <br />J2 SECONDARY SILVER TOTAL RECOV UG/L 0 06/91 06/91 <br />JJ COPPER DISSOLVED 1.429 42.6 70.000 -30.000 UG/L 7 II/80 04/83 <br />J4 ZINC DISSOLVED 49.529 36.3 120.000 -10.000 UG/L 17 11/80 04/89 <br />JS TOTAL RECOV UG/L 0 06/91 06/91 <br />J6 IRON DISSOLVED 505.467 1867.7 16000.000 -60.000 UG/L 75 09/80 08/99 <br />J7 TOTAL RECOV UG/L 0 06/91 06/91 <br />J8 MANGANESE DISSOLVED 1329.324 III8.8 4310.000 -20.000 UG/L 74 09/80 08/99 <br />TABLE l0A SITE: OBAV2 (008-AV-2, FOIDEL CREEK ALLUVIUM) <br />